CN1169771A - Air conditioner and method of controlling washing operation thereof - Google Patents
Air conditioner and method of controlling washing operation thereof Download PDFInfo
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- CN1169771A CN1169771A CN 95196800 CN95196800A CN1169771A CN 1169771 A CN1169771 A CN 1169771A CN 95196800 CN95196800 CN 95196800 CN 95196800 A CN95196800 A CN 95196800A CN 1169771 A CN1169771 A CN 1169771A
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Abstract
The present invention provides an air conditioner, which includes ports (22, 23, 24) provided on portions in a refrigerant circuit where oil are liable to gather, such as bottoms of a compressor (1), accumulator (5), a receiver (12) and the like, through which ports a refrigerant is extracted and charged. The air conditioner is further provided with a control unit (50) for controlling washing operation for the refrigerant circuit, such that at the time of washing of the refrigerant circuit, washing operation is continued under the control of the control unit (50) for a predetermined period of time while increasing a frequency of the compressor (1) so as to, for example, make a temperature in a discharge pipe (2) higher than a predetermined value, and then is stopped, and the washing operation is resumed after a fixed period of time. In the air conditioner, washing of the refrigerant circuit is efficiently and effectively performed by repeatedly starting and stopping the operation of the compressor (1) predetermined times within a predetermined period of time. After washing, the refrigerant and an oil are replaced by new ones. Such replacement is simply performed through the ports (22, 23, 24).
Description
The present invention relates to clean air conditioner and the method for controlling washing operation thereof of running to remove impurity in the refrigerant loop.
Past is owing to used fluorine Lyons 22 (the dichlorodifluoromethane) (CHClF that contains chlorine in air conditioner and the refrigerator
2) wait cold-producing medium, the destruction of ozone layer is just becoming distinct issues in recent years.Therefore, as the countermeasure that prevents to damage the ozone layer, the replacement cold-producing medium substituted freon 22HCFc22 that is using not chloride HFC (fluorine hydrocarbon) to be.
, be necessary to use and the corresponding refrigerator oil of cold-producing medium that uses together.The refrigerator oil of using as described HFC series coolant can be artificial oil (for example, ester, ether, alkylbenzene wet goods).
Therefore, make refrigerator oil if use this artificial oil, different with the mineral oil that uses in the past, must be noted that (so-called impurity (pollutant) is meant the oil residues of cutting oil residual in the refrigerating circuit, ROLLING OIL, expander oil, processing wet goods for residual impurity outside refrigerator oil and the cold-producing medium, and the galling powder, the retained foreign body of polymer etc.).Tubule classes such as capillary, electric expansion valve) its reason is that these residual impurities can produce and (for example: defective such as stop up pressure reducer.Therefore,, will carry out flushing operation, promptly cleaning operation be carried out in system's refrigerating circuit for removing the residual impurity in HFC series coolant/artificial oil apparatus system.
But, because also do not set up up to now and effectively clean method of operation, do not have yet and resemble the device that cleans the dedicated operation pattern the operation mode, therefore, with forced refrigeration operation mode or pressure warming operation pattern, only carry out the continuous wash running at reasonable time in the past.And, clean running-end and unload the parts that compressor etc. accumulates oil (oil contains many residual impurities) easily from installing, take residual impurity out of by taking out oil the parts under installing dismounting, refill fresh oil simultaneously, preferably the parts that unload are assembled in the return device once more.But, when the residual impurity of discharge is not many, usually think that the cleaning of refrigerant loop is insufficient, reach management standard below it for removing residual impurity this moment, will carry out several times repeatedly above-mentioned a succession of operation.
Like this and since in the past refrigerant loop clean can be described as nonstandard, mostly will be with carrying out a large amount of cleaning operations for a long time, thereby have the problem of cleaning the time of costing a lot of money.And the discharge of each residual impurity that is to say and changes oil, and all must carry out the dismounting of parts troublesomely.Zu Zhuan operation again.As a result, in order to remove residual impurity, must the expensive time.Have, method is in the past whenever once cleaned running, will change oil again, and promptly will comprise above-mentioned a plurality of operations of removing the residual impurity operation, thereby the high problem of cost is arranged.Outside these problems, in method in the past, also there are problems such as other development experiments man-hour of some problems, particularly reliability, evaluation test etc. is many.
In view of this, the object of the present invention is to provide a kind of air conditioner and method of controlling washing operation thereof that can overcome above-mentioned shortcoming, can clean running at short notice efficiently, carry out the operation of removal of contamination simultaneously simply, and improve cleaning performance and reliability.
For achieving the above object, connect compressor, condenser, expansion mechanism and evaporimeter in the air conditioner provided by the invention successively, form the refrigerant loop of sealing, cold-producing medium circulates in described refrigerant loop.It is characterized in that the part of accumulating oil in described refrigerant loop easily is provided with to extracting the outlet of filling oil usefulness.
According to the present invention, owing to be provided with the special use outlet of extracting filling oil usefulness in the part of accumulating oil easily, it is easier than in the past to remove the related operation of changing oil of impurity, and the activity duration has also shortened.
And the typical part of accumulating oil easily is the bottom of compressor liquid storage device, receiver etc.
Also have, method of controlling washing operation provided by the invention is used for following air conditioner, and be linked in sequence in this air conditioner compressor, condenser, expansion mechanism and evaporimeter form the refrigerant loop that seals, and cold-producing medium circulates in described refrigerant loop.The method is characterized in that the startup that repeats the compressor operation of pre-determined number in the given time stops when cleaning running.
Carry out the air conditioner of this method of controlling washing operation, be furnished with the control assembly that stops to control described compressor for the startup that repeats pre-determined number in the given time.
, the present inventor stopped number of times and discharge liquid temp etc. as parameter with the duration of runs in the refrigerant loop, startup before finishing the present invention, the goods cleaning performance is investigated.Found that it is good to start a side cleaning performance longer than the duration of runs that stops often.The present invention just is being based on this investigation result and is producing.Therefore,, just may in than the shorter in the past time, remove the residual impurity in the refrigerant loop, can also improve cleaning performance simultaneously according to the present invention.Owing to scavenging period is shortened, just may reduce cost.And, by improving cleaning performance, the protection that just may seek to improve the reliability of pressure reducers such as capillary, electric expansion valve and realize compressor.
Have again, the investigation result of carrying out according to the present inventor as can be known, raise if discharge hydraulic coupling (can be converted into and discharge liquid temp),, just can easily extrude the residual impurity that accumulates in the compressor motor because the pressure reduction of the high-pressure side of compressor and low-pressure side and its increase pro rata.The method of controlling washing operation relevant with embodiment according to this investigation result is: the precalculated position in described refrigerant loop detects pressure or temperature to once running, according to described pressure or temperature than the big operating frequency of controlling compressor like that of predetermined value, simultaneously, after carrying out compressor operation continuously on schedule, the scheduled time stops.
As pressure or temperature in above-mentioned precalculated position, can use pressure or temperature in the discharge pipe arrangement that is connected with above-mentioned compressor, perhaps use pressure or temperature in the above-mentioned condenser.In one embodiment, detect interior pressure or temperature and interior pressure or the temperature of above-mentioned condenser of discharge pipe arrangement is connected with above-mentioned compressor, according to above-mentioned pipe arrangement or above-mentioned condenser both one of pressure or the temperature frequency of controlling compressor than described predetermined value greatly like that.
For implementing this method of controlling washing operation, in the air conditioner of an embodiment, dispose and discharge pipe arrangement or/and the temperature of condenser or press detection sensor.For temperature and pressure can be converted mutually, the sensor of use is temperature sensor or pressure sensor.For this air conditioner, above-mentioned control section has from the output of the sensor and judges whether the 1st discriminating gear greater than predetermined value, and control operating frequency control device when being judged as less than above-mentioned predetermined value, is arranged in the output of the sensor when the 1st discriminating gear, the operating frequency control device that the operating frequency of compressor is risen.And compressor begins through after the continuous running of the scheduled time from running, and control section has the startup stop control that stops the certain hour running.Like this, the control section of this air conditioner, rely on the 1st discriminating gear, operating frequency control device and start stop control, to 1 running, pressure or temperature according to the precalculated position that makes refrigerant loop are bigger like that than predetermined value, the control compressor frequency after compressor turns round on schedule continuously simultaneously, just stops the running of a period of time.Utilize to start stop control, the startup of compressor operation stops only to repeat pre-determined number.
And, the method of controlling washing operation of other embodiment, be the pressure reduction of obtaining high pressure one lateral pressure and low pressure one lateral pressure of compressor, to once running, control compressor frequency though become greater than predetermined value according to above-mentioned pressure reduction, but, carry out the running of compressor continuously on schedule after, stop to schedule.
Implement the air conditioner of this method, be furnished with the sensor of high pressure one lateral pressure and low pressure one lateral pressure of the above-mentioned compressor of detecting.And, the control section of this air conditioner, is furnished with the output that receives from the sensor, whether the pressure reduction of judging above-mentioned high pressure one lateral pressure and low pressure one lateral pressure is greater than the 2nd discriminating gear of predetermined value, and judge above-mentioned pressure reduction when predetermined value is following at above-mentioned the 2nd discriminating gear, the operating frequency control device that control operating frequency control device raises the compressor operation frequency.And, compressor from running begin through the scheduled time continuously after the running this control section have and make it stop the startup stop control of a period of time.Like this, the control section of this air conditioner, rely on the 2nd discriminating gear, operating frequency control device and startup stop control, to once running, become greater than predetermined value according to the pressure reduction of compressor high pressure one lateral pressure and low pressure one lateral pressure, control the frequency of compressor, after compressor turns round on schedule continuously simultaneously, just stop the running of a period of time.Utilize to start stop control, the startup of compressor operation stops only to carry out repeatedly pre-determined number.
And the air conditioner of embodiment is provided with the four-way switching valve of conversion cooling operation and warming operation and the outdoor temperature sensor of detection outdoor temperature in above-mentioned refrigerant loop.So described control section is equipped with from the output of said temperature sensor to differentiate whether be higher than the 3rd discriminating gear of predetermined temperature and the control device of controlling the operation mode of four-way switching valve according to this differentiation result.When judging outdoor temperature when predetermined value is above with the 3rd discriminating gear, above-mentioned operation mode control device, control above-mentioned four-way switching valve, the cleaning running is undertaken by refrigeration mode, and when judging outdoor temperature and be lower than predetermined value, control above-mentioned four-way switching valve, the cleaning running is undertaken by heating mode.
Fig. 1 is the air conditioner refrigeration agent loop diagram of one embodiment of the invention.
Fig. 2 is the connection status schematic diagram according to the extraction filling outlet (Port) of described compressor of the embodiment of the invention and reservoir.
Fig. 3 is that the extraction filling of the receiver of the embodiment of the invention exports the connection status schematic diagram of (port).
The refrigerant loop that Fig. 4 is illustrated in Fig. 1 stops the curve of number of times as parameter investigation goods cleaning performance result with the duration of runs and startup.
Fig. 5 is the flow chart according to the described cleaning running of embodiment of the invention control.
Fig. 5 A, 5B are respectively the variation of step S5 among Fig. 5.
Fig. 6 represents the printed circuit wiring substrate according to the described outdoor unit device of the embodiment of the invention.
Fig. 7 represents the printed circuit wiring substrate of outdoor unit device in the past.
Below, at the specific embodiment of air conditioner of the present invention, be elaborated with reference to relevant accompanying drawing.Fig. 1 represents the refrigerant loop figure of present embodiment.Among the figure, represent Outdoor Device Unit, represent the indoor equipment unit with B with A.
Be provided with compressor 1 among the Outdoor Device Unit A, and be connected with frequency converter 53.Frequency converter 52 is controlled the operating frequency of compressor 1 under the control of control section 50.
The discharge opeing pipe arrangement 2 of compressor 1 is connected with four-way switching valve 4 with suction pipe arrangement 3.Suck in the pipe arrangement 3 and dispose reservoir 5.In the four-way switching valve 4, the 1st gas tube 6 is connected respectively with the 2nd gas tube 7.The 2nd gas tube 7 is connecting outdoor heat converter 9, sets up screw ventilation 10 in the outdoor heat converter 9.And in the outdoor heat converter 9, the 1st liquid pipe 11, receiver the 12, the 2nd liquid pipe 13 sequentially connect, and dispose electric expansion valve 14 in the 1st liquid pipe 11.Also have, in the 2nd liquid pipe 13, hydraulic lock valve 15 and the 1st on-the-spot pipe arrangement 16 are being linked in sequence.On the other hand, in the 1st gas tube 6, air pressure draught excluder the 8, the 2nd on-the-spot pipe arrangement 17 is linked in sequence.Connect indoor heat converter 18 between the 1st on-the-spot pipe arrangement 16 and the 2nd on-the-spot pipe arrangement 17, setting up crossflow blower fan 19 in the indoor heat converter 18.Have, the 2nd liquid pipe 13 is being connected with the bypass pipe 20 of the 1st liquid pipe 11 by defrosting, disposes magnetic valve 21 in the bypass pipe 20 of defrosting again.
Also have, 25 is non-return valve among Fig. 1, and 26 is capillary, and 27,28 is muffler, and 29,30 is the simply connected pipe joint, and 33 is filter, and M is a motor.And P1～P9 is a pressure sensor, and Te is for measuring the temperature sensor of outdoor temperature, and TC1 and TC2 are the temperature sensor of each self-configuring on outdoor heat converter 9 and the indoor heat converter 18.As described later, be used for present embodiment cleaning running in each output from P1 P9 pressure sensor and control the output that is output as from the pressure sensor P1 that is arranged on discharge opeing pipe arrangement 2.Output from other pressure sensors is controlled as cleaning running running in addition.
In the above-mentioned refrigerant loop, four-way switching valve 4 is transformed into position shown in dashed lines arrow among the figure, and the cold-producing medium that utilizes compressor 1 to discharge turns back to the indoor heat converter 18 that constitutes evaporimeter by the outdoor heat converter 9 that constitutes condenser and carries out cooling operation.On the other hand, the cold-producing medium of discharge opposite with above-mentioned direction shown in solid arrow among the figure position, turn back to the outdoor heat converter 9 that constitutes evaporimeter from the indoor heat converter 18 that constitutes condenser and carry out warming operation.
Shown in Fig. 1 refrigerant loop, connecting extraction filling outlet (port) 22,23,24 in compressor 1, reservoir 5, the receiver 12 respectively.Here, compressor 1 and reservoir 5 represent with Fig. 2 that with the connection status of extracting filling outlet (port) 22,23 out receiver 12 is represented with Fig. 3 with the connection status of extracting filling outlet 24 out.Among Fig. 2, the suction outlet 31 that forms on the top of reservoir 5 be the suction outlet of the cold-producing medium that is connected with above-mentioned refrigerant loop, and the front end of the pipe arrangement 32 that stretches out from the bottom of reservoir 5 is provided with the extraction filling and exports 23.The discharge opeing outlet 34 that forms on the top of compressor 1 be the discharge opeing outlet of the cold-producing medium that is connected with above-mentioned refrigerant loop, and the front end of the pipe arrangement 35 that stretches out below compressor 1 is provided with the extraction filling and exports 22.And among Fig. 3, the suction discharge port 37,38 that forms on receiver 12 tops is respectively the suction discharge port of the cold-producing medium that is connected with refrigerant loop, and the front end of the pipe arrangement 39 that stretches out below receiver 12 is provided with extracts filling outlet 24 out.
Below, the method for removing of residual impurity in the system just in the coolant circuit in the key diagram 1.The impurity here as mentioned above, except that refrigerator oil, comprises the cutting oil, ROLLING OIL, expand tube oil and the processing wet goods oil residues that enter in the cold-producing medium, also comprises retained foreign bodies such as galling powder, polymer.
At first, with duration of runs of the refrigerant loop of Fig. 1, startup stops number of times and the discharge opeing temperature has been investigated cleaning performance as parameter.
Fig. 4 shows when only having the duration of runs and startup to stop number of times as parameter, separates out the cleaning performance that cumulant (mg) form is represented with residual impurity.As Fig. 4 saw, it was good not as increase starts the cleaning performance that stops number of times prolonging the duration of runs.Illustrate in passing, compare that the cleaning performance of cleaning running that carries out starting for 20 times the repetition that stops 3 times between on-stream period in 2 hours is better with the cleaning running that between on-stream period in 24 hours, starts the repetition 3 times that stops three times.Thereby fairly obvious, utilize startup repeatedly to stop, in refrigerant system, can the enough shorter in the past time of ratio remove residual impurity.
And, because the pressure differential deltap P of the suction outlet 31 (low pressure one side) of the discharge opeing of compressor 1 outlet 34 (high pressure one sides) and reservoir 5 and the pressure of discharge are proportional, therefore pressure-the rising of discharging, the residual impurity that accumulates in the motor interior (between laminated plates) of compressor 1 just is extruded easily, thereby, the pressure of discharge is risen, and it is big that pressure differential deltap P becomes, and obviously can make cleaning performance more effective.
Below, utilize the actual cleaning running of control flow chart explanation shown in Figure 5.And, as shown in Figure 6, in the printing distributing board 40 of outdoor unit A, be provided with cleaning model switch 41, with the ON operation of this switch 41, control section 50 (with reference to Fig. 1) is carried out following a series of cleaning running control.
When cleaning running, move ON (step S1) to cleaning operation mode switch 41 earlier.Meanwhile, will be to running times N counter (not shown) of counting and the timer (not shown) initialization of measuring the t duration of runs.
Then, to the outdoor temperature Te that measures with temperature sensor Te and predetermined temperature T1 make comparisons (step S2).Among the step S2, when outdoor temperature Te when predetermined temperature T1 is above, four-way switching valve 4 switches to cooling operation one tunnel, carry out the cleaning running (step S3) of refrigeration mode, and when outdoor temperature Te when predetermined temperature is following, four-way switching valve 4 switches to warming operation one tunnel, cleans running (step S4) by heating mode.
Then, carry out step S5, discharge pipe temperature T d and condensation temperature Tc are made comparisons with design temperature T2 respectively, and the occasion below design temperature T2 as discharge pipe temperature T d or condensation temperature Tc just improves the operating frequency (step S6) with the compressor 1 of frequency converter 52 controls.When discharge pipe temperature T d or the condensation temperature Tc occasion higher than design temperature T2, perhaps among the step S6, operating frequency rises and makes Td or the Tc occasion higher than T2, just enters step S7.
And, utilize the pressure that is arranged on the pressure sensor P1 detection of discharging on the pipe arrangement 2, by it being scaled the temperature T d that temperature can be obtained discharge pipe.Replace pressure sensor P1 with temperature sensor is set, can directly measure vertical pipe temperature T d.And condensation temperature Tc is the temperature of temperature sensor TC1 or TC2 (refrigeration mode TC1, heating mode TC2) detected outdoor heat converter 9 or indoor heat converter 18.
In step S7, to the running times N equal 1 and the duration of runs t surpass 60 minutes (N=1, and t＞60 (minute)) or running number of times 2≤N＜n1 (n1 is a set point number) and the duration of runs t＞10 (branches) differentiate.Then, a differentiation is NO in step S7.Return step S5 immediately, one differentiates for YES in step S7, just enters step S8.That is to say that the running times N is 1 time a occasion, for making cold-producing medium and oily heating, to be 60 minutes continuous running through the t duration of runs, the running times N is the occasion more than 2, for making cold-producing medium and oily heating, be 10 minutes continuous running through the t duration of runs.
In step S8, after shutting down 3 minutes, enter step S9.In step S9, when the running times N surpasses set point number n1, enter step S10, and the running times N is returned step 5 when set point number n1 is following, repeat above-mentioned running.
Have, above-mentioned set point number n1 for example is set at 20 again.
S10 shows with alarm signal for step, at step S11, shuts down then.
Clean running one and finish, 22,23,24 pairs of oil of the extraction filling of configuration outlet are replaced on compressor 1, reservoir 5, receiver 12.And, be preferably in when dispatching from the factory to extract in the filling outlet 22,23,24 and place cock (pinch-roll) etc.
In the air conditioner of present embodiment, bottom such as the compressor 1 in refrigerating circuit, reservoir 5, receiver 12 takes place on the part of long-pending oil easily, owing to be set to extract the extraction filling mouth 22,23,24 of filling oil, just needn't take off compressor, reservoir 5, receiver 12 itself from the air conditioner main body, also needn't assemble once more simultaneously, the operation of extracting filling oil is easier than in the past, and, so, because operability improves, being intended that of reducing cost is possible.
And, in the air conditioner of present embodiment, uniform temperature and certain hour inner control discharge temperature Td, condensation temperature Tc and the duration of runs t, rely in certain duration of runs and to repeat the cleaning running control of turning round/stopping by pre-determined number, can be with removing the impurity that exists in the refrigerant loop than the shorter in the past time, and can improve cleaning performance.In addition, because the shortening of scavenging period, being intended that of reducing cost is possible; Because the improvement of cleaning performance, it also is possible improving the reliability of pressure reducers such as capillary, electric expansion valve and the intention of protection compressor.
More than one embodiment of the present of invention are illustrated, but the invention is not restricted to the foregoing description.Within the scope of the invention, can implement various improvement projects.
For example, in the foregoing description, at compressor 1, reservoir 5, the bottom of receiver 12 is provided for extracting the extraction filling outlet 22,23,24 of filling oil respectively, and such outlet preferably respectively is set.Other is easy to generate the part that oil accumulates at refrigerant loop, and such outlet (port) preferably also is set.And outlet 22,23,24 preferably can be by opening and close extraction, the filling of carrying out oil.
And, be provided with on the printed circuit distributing board 40 of off-premises station and clean operation mode switch 41, clean running control with the cleaning operation mode, as shown in Figure 7, when cleaning operation mode switch was not set, it was good to carry out above-mentioned a series of cleaning running control with forced refrigeration on the printed circuit distributing board 42 of existing off-premises station or pressure warming operation pattern.
And, in the present embodiment, for the step 5 among Fig. 5, detect discharge pipe temperature T d and two temperature of condensation temperature Tc, judge whether any temperature has surpassed predetermined temperature T 2 in two temperature, but the step S5 among Fig. 5 can replace with step S15 among Fig. 5 A or the step S25 among Fig. 5 B.That is: also can only detect discharge pipe temperature T d to replace detecting discharge pipe temperature T d and two kinds of temperature of condenser pipe temperature T c, judge whether this Td surpasses predetermined temperature T2.(the step S15 of Fig. 5 A), and, replace these preferably from from the output of the pressure sensor P1 that discharges pipe arrangement 2 and the pressure differential Δ P that calculates compressor 1 high-pressure side and low-pressure side from the output of the pressure sensor P2 that sucks pipe arrangement 3, judge that this pressure differential deltap P is whether more than predetermined value Vp (the step S25 of Fig. 5 B).
In addition, also the usable temp sensor is replaced used various pressure sensor P1～P9 in the present embodiment.
The present invention can be used for having equipment such as the air conditioner of refrigerant loop and refrigerating plant.
Claims (19)
1. air conditioner, the compressor (1) that wherein is linked in sequence, condenser (9 or 18), expansion mechanism (14) and evaporimeter (18 or 9) form the refrigerant loop of sealing, and cold-producing medium circulates in above-mentioned refrigerant loop,
It is characterized in that this air conditioner is easy to generate the part that oil accumulates in above-mentioned refrigerant loop, be provided with and extract filling oil outlet (port) (22,23,24).
2. air conditioner as claimed in claim 1 is characterized in that above-mentioned outlet (22,23,24) is contained in compressor (1), reservoir (5) and the receiver (12) bottom of one of them at least.
3. air conditioner, the compressor (1) that wherein is linked in sequence, condenser (9 or 18), expansion mechanism (14) and evaporimeter (18 or 9) form the refrigerant loop of sealing, and cold-producing medium circulates in above-mentioned refrigerant loop,
When it is characterized in that this air conditioner cleans above-mentioned refrigerant loop, be furnished with control section (50), control compressor (1) stops by the startup that pre-determined number turns round repeatedly in the given time.
4. air conditioner as claimed in claim 3 is characterized in that:
The sensor (P1, TC1, TC2) of also being furnished with detected pressures or temperature on the precalculated position in above-mentioned refrigerant loop,
Above-mentioned control section (50), be equipped with from the output of the sensor (P1, TC1, TC2) and whether differentiate the 1st discriminating gear (step S5, S15) greater than predetermined value (T2), and when above-mentioned the 1st discriminating gear is judged less than predetermined value (T2) from the output of the sensor (P1, TC1, TC2), be equipped with control operating frequency control device (52), make the operating frequency riser (step S6) of the operating frequency rising of compressor (1).
5. air conditioner as claimed in claim 4 is characterized in that above-mentioned control section (50) is equipped with beginning from running through scheduled time compressor after (1) turn round continuously, stops the startup stop control (S6, S8) of certain hour running.
6. air conditioner as claimed in claim 4 is characterized in that the sensor (P1) can measure pressure or the temperature in the discharge pipe arrangement (2) that is connected with compressor (1).
7. air conditioner as claimed in claim 4 is characterized in that the sensor can measure pressure or the temperature in the above-mentioned condenser (9 or 18).
8. air conditioner as claimed in claim 4 is characterized in that:
The sensor comprises the 1st sensor (P1) of the pressure that can measure in the discharge pipe arrangement (2) that is connected with above-mentioned compressor (1) or temperature and can measure pressure in the above-mentioned condenser (9 or 18) or the 2nd sensor (TC1, TC2) of temperature,
Above-mentioned operating frequency riser (step S6), be that (step 15) is judged as when predetermined value (T2) is following from any output of above-mentioned the 1st sensor (P1) or the 2nd sensor (TC1, TC2) with above-mentioned the 1st discriminating gear, control operating frequency control device (52) rises the operating frequency of compressor (1).
9. air conditioner as claimed in claim 3 is characterized in that:
High pressure one lateral pressure that can detect above-mentioned compressor (1) and the sensor (P1, P2) of low pressure one lateral pressure also be equipped with,
Above-mentioned control section is equipped with and receives the sensor (P1, P2) output, differentiate the pressure reduction (Δ P) of above-mentioned high pressure one lateral pressure and low pressure one lateral pressure and whether judge above-mentioned pressure reduction (Δ P) when predetermined value (Vp) is following greater than the 2nd discriminating gear (step S25) of predetermined value (Vp) and when above-mentioned the 2nd discriminating gear (step S25), control operating frequency control device (52) makes the operating frequency riser (step S6) of the operating frequency rising of compressor (1).
10. air conditioner as claimed in claim 9, it is characterized in that above-mentioned control section be equipped with begin to turn round continuously from running to scheduled time compressor (1) after, stop the startup stop control of certain hour running.
11. air conditioner as claimed in claim 3 is characterized in that:
The four-way switching valve that switches cold air operation and hot gas running also is housed in above-mentioned refrigerant loop;
The outdoor temperature sensor (Te) of measuring outdoor temperature is equipped with;
Above-mentioned control section, be equipped with from the output of said temperature sensor (Te) and whether differentiate the 3rd discriminating gear (step S2) more than predetermined temperature (T1), judge above-mentioned outdoor temperature when predetermined value is above with above-mentioned the 3rd discriminating gear (step S2), clean running by refrigeration mode, and when judging said temperature, clean the control device that drive manner is controlled the operation mode of above-mentioned four-way switching valve (4) by heating mode less than predetermined value.
12. air conditioner as claimed in claim 3 is characterized in that being provided with in order to begin to clean the cleaning operation mode switch (41) of running.
13. the method for controlling washing operation of air conditioner: the compressor that is linked in sequence (1), condenser (9 or 18), expansion mechanism (14) and evaporimeter (18 or 9) and form the refrigerant loop of sealing, cold-producing medium is circulated in above-mentioned refrigerant loop, the method of controlling washing operation of use in refrigeration system is characterised in that when cleaning running, and the startup that only repeats compressor (1) running by pre-determined number stops in the given time.
14. method of controlling washing operation as claimed in claim 13 is characterized in that:
Measure pressure or temperature on the precalculated position in above-mentioned refrigerant loop;
To 1 running, become according to above-mentioned pressure or temperature and to control the operating frequency of compressor (1) greater than predetermined value (T2),, stop at the fixed time continuously after the running at compressor (1) on schedule simultaneously.
15. method of controlling washing operation as claimed in claim 14, it is characterized in that the pressure in above-mentioned precalculated position or temperature for discharge pipe arrangement (2) that above-mentioned compressor (1) is connected in pressure or temperature.
16. method of controlling washing operation as claimed in claim 14 is characterized in that pressure in above-mentioned precalculated position or temperature are pressure or the temperature in the above-mentioned condenser of measuring (9 or 18).
17. method of controlling washing operation as claimed in claim 14 is characterized in that:
In above-mentioned locational pressure or temperature is pressure in the discharge pipe arrangement of measuring with above-mentioned compressor (1) is connected (2) or pressure or the temperature in temperature and the above-mentioned condenser (9 or 18);
Become according to the wherein any one pressure of above-mentioned discharge pipe arrangement (2) or above-mentioned condenser (9 or 18) or temperature and to control the frequency of compressor (1) greater than above-mentioned predetermined value (T2).
18. method of controlling washing operation as claimed in claim 13 is characterized in that:
Obtain the pressure reduction (Δ P) of high pressure one lateral pressure and low pressure one lateral pressure of above-mentioned compressor (1);
To 1 running, become according to above-mentioned pressure reduction (Δ P) and to control the frequency of compressor (1) greater than predetermined value (Vp), compressor (1) stops continuously after the running at the fixed time on schedule simultaneously.
19. method of controlling washing operation as claimed in claim 13 is characterized in that:
Measure outdoor temperature;
Outdoor temperature of measuring (Te) and predetermined value (T1) are made comparisons;
When above-mentioned outdoor temperature (Te) when predetermined value (T1) is above, clean operation by refrigeration mode, when above-mentioned outdoor temperature during, clean running by heating mode less than predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95196800 CN1169771A (en) | 1994-10-25 | 1995-10-24 | Air conditioner and method of controlling washing operation thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP299143/94 | 1994-10-25 | ||
| CN 95196800 CN1169771A (en) | 1994-10-25 | 1995-10-24 | Air conditioner and method of controlling washing operation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1169771A true CN1169771A (en) | 1998-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95196800 Pending CN1169771A (en) | 1994-10-25 | 1995-10-24 | Air conditioner and method of controlling washing operation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169771A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609390B1 (en) | 1998-09-30 | 2003-08-26 | Daikin Industries, Ltd. | Two-refrigerant refrigerating device |
| CN1322289C (en) * | 2003-02-07 | 2007-06-20 | 大金工业株式会社 | Refrigerant pipe washing method, air conditioner replacement method, and air conditioner |
| CN100455949C (en) * | 2004-06-02 | 2009-01-28 | 住友重机械工业株式会社 | Cryorefrigerator contaminant removal |
| CN101501422B (en) * | 2006-08-08 | 2011-01-19 | 大金工业株式会社 | Air conditioner and method for cleaning same |
| CN102954638A (en) * | 2011-08-24 | 2013-03-06 | 罗伯特·博世有限公司 | Refrigeration system and method of operating refrigeration system |
| CN109373802A (en) * | 2018-10-24 | 2019-02-22 | 姚晓宁 | Self-cleaning automotive air-conditioning system |
| CN110736216A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111707024A (en) * | 2020-06-05 | 2020-09-25 | 广东纽恩泰新能源科技发展有限公司 | Hanging type balance tank with refrigerant filling pipe and heat pump system with hanging type balance tank |
-
1995
- 1995-10-24 CN CN 95196800 patent/CN1169771A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609390B1 (en) | 1998-09-30 | 2003-08-26 | Daikin Industries, Ltd. | Two-refrigerant refrigerating device |
| CN1322289C (en) * | 2003-02-07 | 2007-06-20 | 大金工业株式会社 | Refrigerant pipe washing method, air conditioner replacement method, and air conditioner |
| CN100455949C (en) * | 2004-06-02 | 2009-01-28 | 住友重机械工业株式会社 | Cryorefrigerator contaminant removal |
| CN101501422B (en) * | 2006-08-08 | 2011-01-19 | 大金工业株式会社 | Air conditioner and method for cleaning same |
| CN102954638A (en) * | 2011-08-24 | 2013-03-06 | 罗伯特·博世有限公司 | Refrigeration system and method of operating refrigeration system |
| CN102954638B (en) * | 2011-08-24 | 2017-03-01 | 马勒国际有限公司 | Refrigeration system and the method for operation refrigeration system |
| CN109373802A (en) * | 2018-10-24 | 2019-02-22 | 姚晓宁 | Self-cleaning automotive air-conditioning system |
| CN109373802B (en) * | 2018-10-24 | 2020-03-24 | 卡莱弗(山东)汽车科技有限公司 | Self-cleaning automobile air conditioning system |
| CN110736216A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736216B (en) * | 2019-09-27 | 2021-11-23 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111707024A (en) * | 2020-06-05 | 2020-09-25 | 广东纽恩泰新能源科技发展有限公司 | Hanging type balance tank with refrigerant filling pipe and heat pump system with hanging type balance tank |
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